X-Git-Url: https://git.draconx.ca/gitweb/cdecl99.git/blobdiff_plain/e215f7aba9028dd2bce9e10d56fe19bfd72b5a9e..17304d042186dc49856c1d7de82eec15ea5856de:/test/test.h

diff --git a/test/test.h b/test/test.h
index c1be21a..5ffe291 100644
--- a/test/test.h
+++ b/test/test.h
@@ -27,10 +27,14 @@
 #  define _(x) (x)
 #endif
 
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+
 struct cdecl_declspec;
 struct option;
 struct cdecl;
 
+struct test_rng;
+
 void *malloc_nofail(size_t size);
 void *realloc_nofail(void *ptr, size_t size);
 void test_print_specifiers(struct cdecl_declspec *spec);
@@ -42,4 +46,26 @@ bool strict_strtoul(unsigned long *val, const char *str, int base);
 void test_print_version(const char *program);
 void test_print_options(const struct option *lopts);
 
+/*
+ * Allocate a new random number generator with the given seed string (which
+ * should normally be a command-line argument).  The string is parsed as an
+ * integer value as if by strtoull with a base of 0.
+ */
+struct test_rng *test_rng_alloc(const char *seed);
+
+/*
+ * Free the random number generator rng.
+ */
+void test_rng_free(struct test_rng *rng);
+
+/*
+ * Return a random value uniformly on the half-open interval [0,1)
+ */
+double test_rng_uniform(struct test_rng *rng);
+
+/*
+ * Return a random integer uniformly on the closed interval [0, limit-1]
+ */
+unsigned test_rng_uniform_int(struct test_rng *rng, unsigned limit);
+
 #endif